Honing device for cylinders



Dec. 4-, 1962 R GJERTSEN 3,066,455

HONING DEVICE FOR CYLINDERS Filed Dec. 2, 1960 INVENTOR. 46 IN avzersfif 53 t is sh fts This invention relates to a honing device for cylindersand the like, and more particularly to a novel mounting mechanism forthe cylinder engaging elements thereof.

Heretofore, in certain types of honing devices, there are employed aplurality of radially extending right angularly related cylinderengaging elements normally of an abrasive character, some of which maybe non-abrasive, and resilient for cooperative stabilizing engagementwith the interior of the work surface, and wherein cylinder engagingelement included a pair of radial bars slidably provisioned within acentral rotative carrier, with the said bars having secured at theirouter ends as a part thereof, a cylinder engaging element.

The difliculty was that with the wear of the abrasive element, or theresilient element of the cylinder engaging member, it was necessary toreplace the complete cylinder engaging element, including the saidshafts and supporting channel.

it is therefore an object of the present invention to provide a novelform of cylinder engaging element wherein a channel assembly is providedfor holding either an abrasive element, or a resilient element foroperative engagement with the interior of a Work surface to be honed,and wherein the said channel element is removably mounted upon theaxially adjustable supports and is easily replaceable, withoutreplacement of the said supports.

it is a further object of the present invention to provide upon theradially adjustable support members, a clip mechanism whereby theabrasive or resilient elements may be removably mounted and fixedlysecured in position, as desired.

These and other objects will be seen from the following specificationand claim in conjunction with the appended drawing, in which:

FIG. 1 is a fragmentary side elevational view of a honing deviceincorporating the present invention.

FIG. 2 is a fragmentary plan view thereof taken on line 2-2 of FIG. 1.

FIG. 3 is a side elevational view of an abrasive cylinder engagingelement as mounted upon its supporting channel member.

FIG. 4 is an end elevational view thereof.

FIG. 5 is a side elevational view of the leaf spring employed in theassembly of the abrasive mounting upon the fixed portion of the cylinderengaging element.

6 is an end elevational view thereof.

FIG. 7 is a side elevational view of the base portion of the cylinderengaging element which is axially adjustable upon the carrier of thehoning tool.

FIG. 8 is a fragmentary section taken on line 83 of FIG. 7.

FIG. 9 is a fragmentary side elevational view of the assembled cylinderengaging element with the abrasive holder interlockingly clipped withthe mounting device.

FIG. 10 is a fragmentary section taken on line 1@ it) of FIG. 9.

It will be understood that the above drawing illustrates merely apreferred embodiment of the invention and that other embodiments arecontemplated within the scope of the claims hereinafter set forth.

Referring to the drawing, the present honing device for cylinders,includes an elongated carrier, generally indicated at ill withlongitudinally spaced enlargements 11 at its opposite ends withelongated shank 12, therebetween, having a longitudinal bore 33.

As shown in FIG. 1, a pair of longitudinally spaced transverse bores 14-are formed through end portions 11 of said carrier. An additional pairof longitudinally spaced bores are also formed through said carrier atright angles to the bores ltd with the said bores 1d intersecting thelongitudinal bore 13 which extends through carrier it The elongatedpinion 15 extends loosely through bore 13 in the said carrier and isadapted for cooperative meshing engagement with the racks it? formed ontheir respective opposite sides of the support shafts 116, which form apart of the respective plurality of right angularly related cylinderengaging elements generally indicated at 17.

In the present preferred embodimnt of the invention there are four ofsaid cylinder engaging elements arranged radially of the carrier and atright angles to each other. For this purpose and in addition to theabove described bores id, additional longitudinally spaced bores areformed transversely through the respective ends of the carrier iiidisplaced from each other so as to cooperatively receive the respectivesupport shafts T6 of the individual cylinder engaging elements.

For example, the bores in the carrier which receive the shafts of theleft hand cylinder engaging element 17 are arranged so as to pass uponone side of the bore 13, whereas the opposite pair of bores adapted toreceive the shafts 36 of the right hand cylinder engaging element 17will pass upon the opposite side of the bore 13 to proide the necessaryclearance upon rotary adjustment of the pinion l5 and correspondingradial adjustments of the respective cylinder engaging elements, ashereinafter described.

The drive ring 19 concentrically receives one end of carrier ill and ispivotally connected thereto upon its opposite diametrically opposedsides by the fasteners 20. The bifurcated stirrup is right angularlyrelated with respect to the pivotal connections it with its free endsbearing against diametrically opposite sides of the ring 19 andconnected thereto by the fasteners 22.

The said stirrup 231 terminates in the shanlr 23 adapted to receive andhave secured thereinto a conventional power driven spindle 234 fixedlysecured as by the lock nut 24- with respect to the said stirrup andshank, being a means of transmitting rotative motion to the carrier 1%.Though not necessarily forming a part of the present invention manualcontrol means are provided for adjusting the radial positioning of thecylinder engaging elements 17, depending upon the size of the bore ofthe cylinder to be honed.

The adjusting means consists of a gearing assembly 25 interconnectedwith the pinion 15 so that rotation of the said assembly 25 affectsrotary movement of the said pinion with respect to carrier lid andconsequent radial adjustments of the cylinder engaging elements 17simultaneously. A knurled adjusting member 26 is secured to theadjusting means 25, being in threaded engagement with the extension 27,which projects axially from the carrier ill and which has a spring biasapplied thereto by the coiled spring 29 adjustably mounted on theextension 27 by the nut 23 for regulating the tension therein.

Accordingly on rotation of the adjusting means 26 and the pinion 15, itis seen that in view of the gear connection between the said pinion andthe racks 18, each of the cylinder engaging elements i? may be adjustedradially inwardly or outwardly with respect to carrier 15?, with thesaid elements moving in unison and with their outer cylinder engagingsurfaces all at the same radius.

The present invention is particularly directed to the structure of thecylinder engaging elements 17, now described in further detail withrespect to FIGS. 3 through 10, and includes an elongated bracket supporthaving an elongated rectangularly shaped base from which projects thepair of parallel spaced support shafts 16, which carry upon their onesides the racks 18, as above described.

Top plate 31 is fixedly secured over the base plate 3% and at its endscorresponding to the respective ends of said base plate has a pair ofopposed inwardly directed channels 32-33, best illustrated in FIG. 7,and defining therein the receiving slots 34 at the opposite ends of thetop plate 31. Also a pair of longitudinally spaced notches 35 are formedwithin the top plate 31 adjacent one edge thereof adapted tocooperatively receive the stops 42 of similar shape when the removablechannel 36 is mounted thereon as hereinafter described.

In the preferred embodiment of the invention, there are four cylinderengaging elements 17, one opposed pair, such as the pair shown in FIG. 1carrying an abrasive stone 39 of a suitable abrasive material such asCar borundum. The diametrically opposed right angularly relatedadditional cylinder engaging elements normally do not carry abrasiveelements, but on the other hand, carry a suitable resilientlongitudinally extending cylinder bore engaging strip 45, which isnon-abrasive, but which is resistant to wear and may be constructed ofrubber or neoprene, or any suitable felt or fabric or mohair, or metalsuch as diecast material.

The primary purpose of the additional oppositely arranged resilientcylinder engaging elements is to establish a degree of stability of thehoning tool with respect to the bore of the work being honed for thepurpose of minimizing and preventing vibration and for properlycentering the honing tool. Each of the cylinder engaging elements 17includes, however, an elongated channel 36, as shown in FIGS. 3, 4 and9, two of which will have fixedly cemented or otherwise secured theretoas at 37, the elongated and longitudinally extending abrasive stones 39,being arranged upon the outer surface of the respective channels.

In the preferred embodiment, illustrated in FIG. 4, the said abrasivestones 39 abut the longitudinal flange 38 which defines a locating andretaining means for the said stone 39, being arranged upon the side ofthe stone in opposition to the direction of rotation of the tool and forthe taking up of some of the thrust applied to the said stone onrotation of the honing tool.

The respective elongated channel 36 is adapted for superimposition uponthe bracket support 30-31-32- 33. Suitable clip means are incorporatedupon undersurface portions of channel 36 adapted for interlockinglyretaining engagement with the bracket support, and particularly thechannels 32-33-34 formed at its opposite ends.

The abrasive stone 39 is arranged upon the outer surface of the channel,as shown in FIGS. 3 and 4. The aforesaid clip means are arranged uponthe inner or upon the opposite surface of the channel 36 at its oppositeends and are defined by the outwardly extending transverse flanges 41with the included transverse slots 40 thereover.

In normal use, the channel assembly 36 is placed in lateral registrywith one side of the bracket support 30-31, adjacent the notches 35 sothat the outwardly projecting flanges 41 are in registry with thegrooves 34 defined by the end channels 32-33. At the same time, theabove described transverse grooves 4t} cooperatively receive theinwardly directed flanges 33, which form a part of the above describedend channels 32-33-34. The said channel 36 is then projected laterallyinward and over the bracket plates 30-31 so as to be superimposedthereon with the inward position of the channel determined by registryof the stops 42 within the longitudinally spaced notches 35 upon oneside of the top plate 31.

An undercut elongated notch 43 is formed in the undersurface of channel36 in order to nest and retain therein the elongated formed leaf spring44 which is interposed in compression between the said channel and thebracket support 39-31, for the purpose of frictionally retaining theinterlocked relationship between the said channel and the said bracketsupport, and to serve as an automatic feed to compensate for wear of theabrasive element.

The assembly is such, and the notches 35 so arranged that in operationthe tendency of the channel 36 is to be retained within and upon abracket support 30-31, with the said stops 42 snugly nested Within thenotches 35 completing the assembly.

Accordingly, from time to time, as the abrasive stones 39 wear and needreplacement, it is merely necessary to disengage the channel 36 from thebracket support by manual outward sliding movement by which a new chanelmay be introduced. By this construction, it is no longer necessary todiscard the complete cylinder engaging element generally indicated at17, as heretofore has been the case. All that is necessary now is toremove the one stone with associated channel 36 and replace it withanother of the same type.

The construction of the showing oppositely arranged pair of cylinderengaging elements 17 in FIG. 1, is exactly the same. As to the rightangularly related cylinder engaging elements 17, one of which is shownin FIG. 1, these also include elongated channels 36 of the sameconstruction, as above described. However, instead of mounting andhaving secured thereon the abrasive stones 39 there is mounted andsecured upon the said channel 36 by cementing preferably a resilientfibrous cylinder engaging element of a non-abrasive character, as abovementioned. As these wear, these may also be replaced in the same manner,as above described.

Having described my invention, reference should now be had to thefollowing claim.

I claim:

In a honing device for cylinders, a power rotated carrier, a cylinderengaging element on said carrier, ineluding an elongated bracket supportparallel to the axis of rotation of said carrier, a pair of spacedshafts secured at their one ends to said bracket support and at theiropposite ends adjustably mounted upon and through, and radiallyadjustable outwardly of said carrier, an elongated channel mounted onsaid bracket support, an elongated cylinder engaging abrasive stonesecured to and upon the outer surface of said elongated channel, andclip means on the inner surface of said elongated channel, removablyinterlocked with said bracket support, said bracket support including anelongated base plate, opposed inwardly directed channel flanges upon theopposite ends of said base plate, said clip means including transverseprojections at opposite ends of said elongated channel, nested with saidbase plate channel flanges, and spring means interposed in compressionbetween said elongated channel and bracket support, there being a pairof longitudinally spaced notches formed in said base plate on one sidethereof, and a pair of longitudinally spaced keys depending from saidelongated channel retainingly nested within said notches.

References Cited in the file of this patent UNITED STATES PATENTS1,846,371 Sunnen Feb. 23, 1932 1,919,745 Raphael July 25, 1933 2,627,707Brooks Feb. 10, 1953 2,823,498 Saunders Feb. 18, 1958

